police eventually arrested john allen muhammad and lee boyd malvo for the shootings. they were later convicted. muhammad was executed in 2009. malvo, who was 17 at the time of the shootings, is kurcurrently serving a life sentence without the possibility of parole. >>> this morning american university is warning students to be on alert after a string of incidents where a man has groped students near campus. police say the suspect comes from behind, grabs girls inappropriately, and runs away. this happened four times in the last week and has student on edge. >> i feel really safe around here. i'm not in the city or anything. that's a little bit terrifying. >> something's got to be done. i mean, it's definitely uncalled for, and it's not okay. >> au sent an e-mail to students to alert them about the attacks. the university is asking students to walk in groups and only in well-lit areas. >>> nats fans, the wait is finally over. the washington nationals are national league east champions. they lost to the phillies last night, but the braves also lost.